Zac Oliver is thought to be the only person in the UK with a rare form of leukaemia and is in a race against time to get life-saving treatment

The Sun revealed on Friday that four-year-old Zac is thought to be the only UK person suffering the rare Near Haploid strain of the condition.

Mum Hannah Oliver-Willets said: “I was sceptical when I heard Robbie was in touch. But he was asking for details and you can’t help thinking, ‘Maybe our dreams have been answered.’

“This person shattered our dream.”

At the start of the fundraising drive in September, mum-of-one Bobbie Grimston, 41, sent a Tweet about Zac to @robbie2williams, which bears a picture of the former Take That star and is captioned: “My private Twitter handle.”

Zachariah Oliver who is suffering from the rare Near Haploid strain of leukaemia, pictured with dad Mark Garbett

Bobbie went on to explain that Zac currently has less than 25 per cent chance of survival and that his best hope is through CAR T-cell therapy, which he is not eligible for in the UK.

Bobbie also sent four pictures of the dinosaur-loving youngster.
“Robbie” replied: “Oh! I feel so bad. I would send you a briefcase containing your total amount of $100,000 (£76,000). I would need your home address to mail the briefcase.”
That was when the penny dropped for Bobbie.

“They’ve got no morals. Thankfully, my faith in human nature has been restored by the number of genuine people who have come together to help Zac.”